class Student(object):
    def __init__(self,name,age):
        print('__init__执行了')

stu = Student('Tom',60)
print(stu)
stu = Student(age=60, name='jerry')
print(stu)
print(Student)


numbers = 0

def __init__(self,name='',age=0, position=""):
    self.age=age
    self.name=name
    self.position=position
    print('')
    Student.number  += 1



def show (self):
    print('姓名：%s,年龄: %s,职位: %s'(self.age,self.name,self.position))


def